14x14 Concrete Slab, 4 Inches Thick
A 14 × 14 ft slab (196 sq ft) at 4 in thick takes about 2.66 cubic yards of concrete, with 10% extra for waste. For ready-mix, order 2.75 cu yd for the 14x14, about $445 – $605 delivered, short-load fee included. Bagged, the same 14x14 is 120 80 lb or 160 60 lb bags, about $800 – $1,120 for the concrete alone.
- Ready-mix order
- 2.75 cu yd
- Ready-mix cost
- $445 – $605
- 80 lb bags
- 120
- Bag cost
- $800 – $1,120
Materials only for a 14x14 at 4 in, from national price ranges as of 2026-09; not a live quote.
Using a 14x14 slab
A 14 by 14 pad is a popular base for a 12x12 gazebo or pergola, giving a foot of slab outside the posts all the way around.
As a patio, 196 sq ft holds a table for six plus a grill, or a fire-pit ring with four Adirondack chairs and room to walk behind them.
It is also a roomy hot-tub pad for a larger 8 ft tub with a bench or a step on two sides.
Before you pour the 14x14 at 4 in
- If a gazebo or pergola will be bolted down, find out the post spacing and set the anchors where the posts land.
- Keep a fire pit at the distance its maker and your town require from the house and from overhead branches.
- Slope an open patio away from the house, about 1/8 to 1/4 in per foot.
Full plan for a 14x14 slab, 4 in
- Area
- 196 sq ft
- Thickness
- 4 in
- Volume
- 2.66 cu yd
Bagged concrete estimate (DIY)
$990 – $1,429
Est. as of 2026-09 — not a live quote
Ready-mix delivered, incl. short-load fee (materials only)
$445 – $605
Est. as of 2026-09 — not a live quote
For a pour this size, ready-mix delivery is typically more practical than mixing bags by hand.
Shopping list
- Concrete mix (60 lb bags) Or 240 × 40 lb, 192 × 50 lb or 120 × 80 lb bags. 160 bags
- Ready-mix concrete Alternative to bagged mix; most suppliers have a 1 cu yd order minimum. 2.75 cu yd
- Compactable gravel sub-base 4 in compacted base beneath the slab. 3.27 tons
- 6x6 welded wire mesh Reinforcement for crack control; not a substitute for engineered rebar on structural slabs. 216 sq ft
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Buy bagged concrete
Pick up bagged mix and reinforcement from a hardware store for smaller pours.
View shopping listAssumptions
- Waste allowance: 10% applied to account for over-excavation and spillage.
- Approx. wet weight: 10,780 lb (5.4 tons).
- Prices are national-average retail/delivery ranges as of 2026-09, not live quotes.
- Ready-mix orders under 10 cu yd usually carry a short-load fee; the ready-mix range includes a flat $60-$110. Some suppliers charge per yard instead, so ask for the full fee schedule.
Bags or ready-mix for a 14x14 slab, 4 in?
At 2.66 cu yd, the 14x14 sits where bagged concrete and ready-mix cross over in price. For the 14x14, 120 80 lb bags cost about $800 – $1,120, while 2.75 cu yd of ready-mix costs about $445 – $605, short-load fee included. On the 14x14, ready-mix comes out cheaper by about $435 at the middle of each range, and it saves mixing 120 bags.
Is 4 in thick enough for a 14x14 slab?
4 in is the usual thickness for a 14x14 patio, walkway, shed floor or equipment pad that carries foot traffic.
Control joints for a 14x14 slab at 4 in
Like any slab, a 4 in 14x14 shrinks while it cures; control joints decide where its cracks go. The usual rule (ACI and PCA guidance) puts joints in a 14x14 at 4 in every 8 to 12 ft, 24 to 36 times the thickness, cut 1 in deep (a quarter of the thickness) as soon as the surface takes the saw without raveling, usually within the first day.
On the 14x14 at 4 in, a joint every 10 ft or less means 1 joint each way: 4 panels of about 7 × 7 ft and 28 ft of saw cut.
How much a 14x14 slab 4 in thick weighs
Wet concrete weighs about 150 lb per cubic foot, so the 14x14 pour is about 10,780 lb (5.4 tons). As bags, the 14x14 is 120 80 lb bags, 9,600 lb in all: about 7 trips in a pickup carrying 1,500 lb a load. Nobody hauls 9,600 lb of bags for a 14x14 in a pickup; it comes by ready-mix truck or as pallets on a delivery truck.
The 14x14 at 4 in against nearby sizes
Every row uses the same 10% waste and prices as the 14x14 at 4 in; costs are for the concrete only.
| Slab | Cu yd | 60 lb bags | 80 lb bags | Ready-mix order | Bags cost | Ready-mix cost |
|---|---|---|---|---|---|---|
| 12x16 slab, 4 in | 2.61 | 157 | 118 | 2.75 cu yd | $785 – $1,099 | $445 – $605 |
| 14x14 slab, 4 in (this page) | 2.66 | 160 | 120 | 2.75 cu yd | $800 – $1,120 | $445 – $605 |
| 10x20 slab, 4 in | 2.72 | 163 | 123 | 2.75 cu yd | $815 – $1,141 | $445 – $605 |
Questions about a 14x14 slab, 4 in
How many bags of concrete for a 14x14 slab 4 inches thick?
Plan on 71.9 cubic feet for the 14x14, which is 120 80 lb bags, 160 60 lb bags, 192 50 lb or 240 40 lb bags once 10% waste is in.
How many yards of concrete for a 14x14 slab 4 inches thick?
The 14x14 measures out at 2.42 cubic yards, or 2.66 with 10% for waste. Order 2.75 cu yd for the 14x14, since ready-mix is sold in quarter yards with a 1 yard minimum at most plants.
How much does a 14x14 concrete slab 4 inches thick cost?
Concrete alone for the 14x14 runs about $445 – $605 for 2.75 cu yd of ready-mix delivered, short-load fee included, or $800 – $1,120 for 160 60 lb bags. Add a 4 in gravel base and wire mesh and the bagged 14x14 plan comes to $990 – $1,429. Labor, forms and finishing for a 14x14 at 4 in come on top of these national ranges (as of 2026-09), which are not quotes.
How much does a 14x14 concrete slab 4 inches thick weigh?
About 10,780 lb (5.4 tons) of wet concrete for the 14x14, at 150 lb per cubic foot. The 120 80 lb bags for a 14x14 weigh 9,600 lb: about 7 trips in a pickup carrying 1,500 lb a load.
Where do control joints go on a 14x14 slab 4 inches thick?
On a 14x14 at 4 in, every 8 to 12 ft (24 to 36 times the thickness), sawn 1 in deep. On the 14x14 at 4 in, a joint every 10 ft or less means 1 joint each way: 4 panels of about 7 × 7 ft and 28 ft of saw cut.
Limitations
The 14x14 figures at 4 in are material estimates and typical price ranges, not a quote or a structural design. Confirm that 4 in, the reinforcement and the joint layout suit your soil, loads and local code for a 14x14 slab with a qualified professional.